The Commodore 64 is by far the most famous and successful computer Commodore ever made. But there were numerous Commodore computer models over the years. Some were also successful. Some were complete flops. Overall Commodore had a good 18-year run, but it could have been so much longer and better.

Let’s take a walk through the Commodore computer models from the beginning in 1976 to the bitter end in 1994.

Old IDE hard drives are slow and unreliable, due to their age. What if I could tell you there’s a cheap, readily available substitute that’s both solid state and faster? There is. Let’s talk about using compact flash as a hard drive.

The IBM PS/1, sometimes called the IBM PS1, was a line of 1990s personal computer systems, not to be confused with the Sony Playstation video game console that’s also often called the PS1. The PS/1 was IBM’s second attempt at a mass market consumer PC, after the ill-fated PCjr.

You can neatly divide the PS/1 into two generations. While they ran the same software, they had major philosophical differences. Perhaps more than any other computer line, they represent IBM’s change of heart in the early 1990s as it tried to survive in an extremely competitive and crowded market.

In some ways, 1985 was a really pivotal year for computing. The industry was changing fast, but in 1985, many relics from the past were still present even as we had an eye for the future. Here’s a look back at computers in 1985 and what made that year so interesting.

I think 1985 was interesting in and of itself, but it also made the succeeding years a lot more interesting. A surprising amount of the technology that first appeared in 1985 still has an impact today.

The IBM PS/2 line was a fairly radical departure from the older IBM PC line. This was deliberate, as IBM wanted to disrupt the clone industry, which it saw as a threat to its business. Here’s a look back at the IBM PS/2 vs PC, the line it replaced.

IBM succeeded with the PC because it created an ecosystem, not just a PC. IBM’s misstep was creating an open architecture and then trying to close it back up after the fact with the PS/2. In IBM’s defense, it’s not clear whether they knew this at the time. If nothing else, in the case of the IBM PS/2 vs PC, IBM created a classic case study of open architecture vs closed.

The Compaq Deskpro 386, announced in September 1986, was a landmark IBM PC compatible computer. The first fully 32-bit PC based on the Intel 386, its release took the leadership of the PC ecosystem away from IBM, and Compaq became the leader.

Compaq was no upstart by 1986. Its Compaq Portable was a runaway success earlier in the decade, and Compaq was a darling of the industry. The Deskpro 386 solidified Compaq’s position as an industry innovator.

What went wrong with Windows Vista? If you were around when it launched, you probably wouldn’t argue with me if I said the things that went right were easier to count than the things that went wrong. Windows XP lived nearly forever because Vista was so bad.

It’s been a long time since I’ve seen someone explain the benefits of defragmenting your computer hard drive. I do see a lot of misconceptions out there. I explained defragmenting in my 1999 book, so I’ll explain it again.

Part of the misconception is that things have changed. The tools have changed, yes. But the need hasn’t.

The IBM PS/2 line, released in April 1987, was IBM’s attempt to reinvigorate its aging personal computer line and fight off cloning. Although the line sold fairly well, it failed to hold off cloning and IBM never regained the market dominance it enjoyed in the first half of the decade.

Let’s take a look back at the history, trials and tribulations of the IBM PS/2.